<template>
	<div class="scDialogTable" :style="{'flex': 1, 'min-height': 110}" ref="scTableMain" v-loading="loading">
		<div class="scTable-table">
			<el-table v-bind="$attrs" :data="tableData" header-row-class-name="tables" :row-key="rowKey" :key="toggleIndex" ref="scTable" :height="height?height:'100%'" :size="config.size" :border="config.border" :stripe="config.stripe" :summary-method="remoteSummary?remoteSummaryMethod:summaryMethod" @sort-change="sortChange" @filter-change="filterChange" @selection-change="handleSelectionChange">
				<slot></slot>
				<template v-for="(item, index) in userColumn" :key="index">
					<el-table-column v-if="!item.hide" :column-key="item.prop" :label="item.label" :prop="item.prop" :width="item.width" :sortable="item.sortable" :fixed="item.fixed" :filters="item.filters" :filter-method="remoteFilter||!item.filters?null:filterHandler" :show-overflow-tooltip="item.showOverflowTooltip">
						<template #default="scope">
							<slot :name="item.prop" v-bind="scope">
								{{scope.row[item.prop]}}
							</slot>
						</template>
					</el-table-column>
				</template>
				<el-table-column min-width="1"></el-table-column>
				<template #empty v-if="dataend">
					<el-empty :description="emptyText" :image-size="100"></el-empty>
				</template>
			</el-table>
		</div>
		<div class="scTable-page" v-if="!hidePagination&&!hideDo">
			<div class="scTable-pagination">
				<el-pagination v-if="!hidePagination" background :small="true" :layout="paginationLayout" :total="total" :page-size="pageSize" v-model:currentPage="currentPage" @current-change="paginationChange"></el-pagination>
			</div>
			<div class="scTable-do" v-if="!hideDo">
				<el-button v-if="!hideRefresh" @click="refresh" icon="el-icon-refresh" circle style="margin-left:15px"></el-button>
				<!-- <el-popover v-if="column" placement="top" title="列设置" :width="500" trigger="click" :hide-after="0" @show="customColumnShow=true" @after-leave="customColumnShow=false">
					<template #reference>
						<el-button icon="el-icon-set-up" circle style="margin-left:15px"></el-button>
					</template>
					<columnSetting v-if="customColumnShow" ref="columnSetting" @userChange="columnSettingChange" @save="columnSettingSave" @back="columnSettingBack" :column="userColumn"></columnSetting>
				</el-popover>
				<el-popover v-if="!hideSetting" placement="top" title="表格设置" :width="400" trigger="click" :hide-after="0">
					<template #reference>
						<el-button icon="el-icon-setting" circle style="margin-left:15px"></el-button>
					</template>
					<el-form label-width="80px" label-position="left">
						<el-form-item label="表格尺寸">
							<el-radio-group v-model="config.size" size="mini" @change="configSizeChange">
								<el-radio-button label="large">大</el-radio-button>
								<el-radio-button label="medium">中</el-radio-button>
								<el-radio-button label="small">正常</el-radio-button>
								<el-radio-button label="mini">小</el-radio-button>
							</el-radio-group>
						</el-form-item>
						<el-form-item label="样式">
							<el-checkbox v-model="config.border" label="纵向边框"></el-checkbox>
							<el-checkbox v-model="config.stripe" label="斑马纹"></el-checkbox>
						</el-form-item>
					</el-form>
				</el-popover> -->
			</div>
		</div>
	</div>
</template>

<script>
	import config from "@/config/table";
	import columnSetting from './columnSetting'

	export default {
		name: 'scTable',
		components: {
			columnSetting
		},
		props: {
			tableName: { type: String, default: "" },
			url: { type: String, default: () => {return ''} },
			apiObj: { type: Object, default: () => {} },
			params: { type: Object, default: () => ({}) },
			data: { type: Object, default: () => {} },
			height: { type: [String,Number], default: "100%" },
			size: { type: String, default: "small" },
			border: { type: Boolean, default: false },
			stripe: { type: Boolean, default: false },
			pageSize: { type: Number, default: config.pageSize },
			rowKey: { type: Function, default: null },
			summaryMethod: { type: Function, default: null },
			column: { type: Object, default: () => {} },
			remoteSort: { type: Boolean, default: false },
			remoteFilter: { type: Boolean, default: false },
			remoteSummary: { type: Boolean, default: false },
			hidePagination: { type: Boolean, default: false },
			hideDo: { type: Boolean, default: false },
			hideRefresh: { type: Boolean, default: false },
			hideSetting: { type: Boolean, default: false },
			paginationLayout: { type: String, default: "total, prev, pager, next, jumper" },
			exportData: {type: Object, default: () => {} },
			formatExportData: { type: Function, default: null }
		},
		watch: {
			//监听从props里拿到值了
			data(){
				this.tableData = this.data;
				this.total = this.tableData.length;
			},
			apiObj(){
				this.tableParams = this.params;
				this.refresh();
			},
			url() {
			}
		},
		computed: {
			_height() {
				return Number(this.height)?Number(this.height)+'px':this.height
			}
		},
		data() {
			return {
				isActivat: true,
				emptyText: "暂无数据",
				toggleIndex: 0,
				tableData: [],
				total: 0,
				currentPage: 1,
				prop: null,
				order: null,
				loading: false,
				dataend: false,
				tableHeight:'100%',
				tableParams: this.params,
				userColumn: [],
				customColumnShow: false,
				summary: {},
				config: {
					size: this.size,
					border: this.border,
					stripe: this.stripe
				},
				scrollTop: null
			}
		},
		mounted() {
			//判断是否开启自定义列
			if (this.column) {
				this.getCustomColumn()
			} else {
				this.userColumn = this.column
			}
			//判断是否静态数据
			if (this.apiObj) {
				this.$nextTick(() => {
					this.getData();
				})
			} else if (this.data) {
				this.tableData = this.data;
				this.total = this.tableData.length
			}

			this.scrollHandle()
		},
		activated(){
			if(!this.isActivat){
				this.$refs.scTable.doLayout()
			}
		},
		deactivated(){
			this.isActivat = false;
		},
		beforeDestroy() {
			this.destroyScroll()
		},
		methods: {
			//获取列
			async getCustomColumn(){
				const userColumn = await config.columnSettingGet(this.tableName, this.column)
				this.userColumn = userColumn
			},
			//获取数据
			async getData(){
				this.loading = true;
				var reqData = {
					[config.request.page]: this.currentPage,
					[config.request.pageSize]: this.pageSize,
					[config.request.prop]: this.prop,
					[config.request.order]: this.order
				}
				if(this.hidePagination){
					delete reqData[config.request.page]
					delete reqData[config.request.pageSize]
				}
				Object.assign(reqData, this.tableParams)

				try {
					var res = await this.apiObj.get(reqData);
				}catch(error){
					this.loading = false;
					this.emptyText = error.statusText;
					return false;
				}
				try {
					var response = config.parseData(res);
				}catch(error){
					this.loading = false;
					this.emptyText = "数据格式错误";
					return false;
				}
				if(response.code != config.successCode){
					this.loading = false;
					this.emptyText = response.msg;
				}else{
					this.emptyText = "暂无数据";
					if(this.hidePagination){
						this.tableData = response.data || [];
					}else{
						this.tableData = response.rows || [];
					}
					this.total = response.total || 0;
					this.summary = response.summary || {};
					this.loading = false;
					this.dataend = true
				}
				if (this.$refs.scTable) {
					this.$refs.scTable.$el.querySelector('.el-table__body-wrapper').scrollTop = 0
				}
				this.$emit('dataChange', res, this.tableData)
			},
			//分页点击
			paginationChange(){
				this.getData();
			},
			//刷新数据
			async refresh(){
				this.$refs.scTable.clearSelection();
				await this.getData();
				this.restoreScrollBar()
			},
			//更新数据 合并上一次params
			upData(params, page=1){
				this.currentPage = page;
				this.$refs.scTable.clearSelection();
				Object.assign(this.tableParams, params || {})
				this.getData()
			},
			//重载数据 替换params
			reload(params, page=1){
				this.currentPage = page;
				this.tableParams = params || {}
				this.$refs.scTable.clearSelection();
				this.$refs.scTable.clearSort()
				this.$refs.scTable.clearFilter()
				this.getData()
			},
			//自定义变化事件
			columnSettingChange(userColumn){
				this.userColumn = userColumn;
				this.toggleIndex += 1;
			},
			exportHander(params, page=1) {
				this.currentPage = page;
				this.$refs.scTable.clearSelection();
				Object.assign(this.tableParams, params || {})
				this.getExport()
			},
			async getExport() {
				if (!this.exportData.data) {
        			this.exportData.data = [];
      			}

				this.loading = true
				let reqData = {
					[config.request.page]: this.currentPage,
					[config.request.pageSize]: this.pageSize,
					[config.request.prop]: this.prop,
					[config.request.order]: this.order
				}
				if(this.hidePagination){
					delete reqData[config.request.page]
					delete reqData[config.request.pageSize]
				}
				Object.assign(reqData, this.tableParams)

				try {
					var res = await this.apiObj.get(reqData);
					if (res.error == 0) {
						let tableData = res.data.list;
						if (!tableData) {
							tableData = [];
						}

						tableData.forEach((ele) => {
							if (this.exportData.formatData) {
								this.formatExportData(ele);
							}
              				this.exportData.data.push(ele);
            			});

						if (tableData.length === 0) {
							if ( ! this.exportData.data) {
								this.exportData.data = []
							}

							const data = this.exportData.data.map((v) => {
								if (this.exportData.drive === 'table2excel') {
									let rowItem = []
									this.exportData.column.forEach(j => {
										if (typeof(j) === 'object') {
											rowItem[j.key] = v[j.key]
										} else {
											rowItem[j] = v[j]
										}
									})
									return rowItem
								}
								return this.exportData.column.map((j) => v[j])
							});

							if (data.length === 0) {
								this.emptyText = "暂无数据";
							} else {
								if (this.exportData.drive === 'table2excel') {
									const { export_json_to_excel } = require("@/components/Excel/Table2Excel");
									export_json_to_excel({
										titles: this.exportData.header,
										columns: this.exportData.column,
										data: data,
										filename: this.exportData.filename,
									});
								} else {
									const { export_json_to_excel } = require("@/components/Excel/Export2Excel");
									export_json_to_excel({
										header: this.exportData.header,
										data: data,
										filename: this.exportData.filename,
									});
								}
							}
							this.currentPage = 1;
							this.loading = false;
							this.exportData.data = [];
						} else {
							this.currentPage ++;
							this.getExport();
						}
					}
				}catch(error){
					this.loading = false;
					this.emptyText = error.statusText;
					console.log('error: ' + error)
					return false;
				}
			},
			//自定义列保存
			async columnSettingSave(userColumn){
				this.$refs.columnSetting.isSave = true
				try {
					await config.columnSettingSave(this.tableName, userColumn)
				}catch(error){
					this.$message.error('保存失败')
					this.$refs.columnSetting.isSave = false
				}
				this.$message.success('保存成功')
				this.$refs.columnSetting.isSave = false
			},
			//自定义列重置
			async columnSettingBack(){
				this.$refs.columnSetting.isSave = true
				try {
					const column = await config.columnSettingReset(this.tableName, this.column)
					this.userColumn = column
					this.$refs.columnSetting.usercolumn = JSON.parse(JSON.stringify(this.userColumn||[]))
				}catch(error){
					this.$message.error('重置失败')
					this.$refs.columnSetting.isSave = false
				}
				this.$refs.columnSetting.isSave = false
			},
			//排序事件
			sortChange(obj){
				if(!this.remoteSort){
					return false
				}
				if(obj.column && obj.prop){
					this.prop = obj.prop
					this.order = obj.order
				}else{
					this.prop = null
					this.order = null
				}
				this.getData()
			},
			//本地过滤
			filterHandler(value, row, column){
				const property = column.property;
				return row[property] === value;
			},
			//过滤事件
			filterChange(filters){
				if(!this.remoteFilter){
					return false
				}
				Object.keys(filters).forEach(key => {
					filters[key] = filters[key].join(',')
				})
				this.upData(filters)
			},
			//远程合计行处理
			remoteSummaryMethod(param){
				const {columns} = param
				const sums = []
				columns.forEach((column, index) => {
					if(index === 0) {
						sums[index] = '合计'
						return
					}
					const values =  this.summary[column.property]
					if(values){
						sums[index] = values
					}else{
						sums[index] = ''
					}
				})
				return sums
			},
			configSizeChange(){
				this.$refs.scTable.doLayout()
			},
			//原生方法转发
			clearSelection(){
				this.$refs.scTable.clearSelection()
			},
			toggleRowSelection(row, selected){
				this.$refs.scTable.toggleRowSelection(row, selected)
			},
			toggleAllSelection(){
				this.$refs.scTable.toggleAllSelection()
			},
			toggleRowExpansion(row, expanded){
				this.$refs.scTable.toggleRowExpansion(row, expanded)
			},
			setCurrentRow(row){
				this.$refs.scTable.setCurrentRow(row)
			},
			clearSort(){
				this.$refs.scTable.clearSort()
			},
			clearFilter(columnKey){
				this.$refs.scTable.clearFilter(columnKey)
			},
			doLayout(){
				this.$refs.scTable.doLayout()
			},
			sort(prop, order){
				this.$refs.scTable.sort(prop, order)
			},
			handleSelectionChange(val) {
				this.$emit('handleSelectionChange', val)
			},
			// 页面刷新后设置当前滚动的位置
			scrollHandle() {
				this.$refs.scTable.$refs.bodyWrapper.addEventListener('scroll', this.scrollEvent)
			},
			destroyScroll() {
				this.$refs.scTable.$refs.bodyWrapper.removeEventListener('scroll', this.scrollEvent)
			},
			scrollEvent(e) {
				this.scrollTop = e.target.scrollTop
			},
			restoreScrollBar() {
				if (this.scrollTop) {
					this.$refs.scTable.$refs.bodyWrapper.scrollTop = this.scrollTop
					// this.$el.querySelector('.el-table__body-wrapper').scrollTop = this.scrollTop
				}
			},
			// 页面刷新后设置当前滚动的位置END
		}
	}
</script>

<style lang="scss" scoped>
.scDialogTable {border: 1px solid #e6e6e6;}
.scTable-table {height: calc(100% - 50px);}
.scTable-page {height:50px;display: flex;align-items: center;justify-content: space-between;padding:0 15px;}
.scTable-do {white-space: nowrap;}
.scTable:deep(.el-table__footer) .cell {font-weight: bold;}
.scDialogTable:deep .el-table th.el-table__cell{background-color: #f4f4f5;}
[data-theme='dark'] .scDialogTable:deep .el-table th.el-table__cell{background-color: var(--el-background-color-base);}
[data-theme='dark'] .scDialogTable {border-color: var(--el-border-color-lighter) !important;}
</style>